find out as we continue from the cnn newsroom to your living room. i gave birth to my daughter on may 18th, five days later, i had a massive heart attack. bayer aspirin was the first thing the emts gave me. now, i'm on a bayer aspirin regimen. [ male announcer ] be sure to talk to your doctor before you begin an aspirin regimen. [ woman ] learn from my story. >>> six people, one mission, to get in shape and take part in the malibu triathlon in september. dr. sonjay gupta joined the it in nation challenge team for their first workout in atlanta. take a look. >> one, two, three -- >> six-pack! >> nice and easy, nice and easy. last time around. we'll jog up as a group, and we're going inside, woo! >> how is it going? >> how you doing? >> as soon as you said those words to me, that you're on a team, i thought oh, my, i'm doing a triathlon. >> my goal for today is not to kill you. ♪ >> huddle up, huddle up, i think we're ready to get started now. i want 30 push-ups. you have three more in you. as try athletes, you can never overswim. go ahead and pick a